Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Hemel Sky Racer Automatic?

At MSRP the Hemel Sky Racer Automatic is the cheaper of the two at $700, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,068 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Hemel Sky Racer Automatic?

The Hemel Sky Racer Automatic wears larger at 43mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 4mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Hemel Sky Racer Automatic?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 50m for the Hemel Sky Racer Automatic.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Hemel Sky Racer Automatic?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Hemel Sky Racer Automatic.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Hemel Sky Racer Automatic?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Hemel Sky Racer Automatic uses the SL4617.

Side by side

Serica Ref. 5303 Diving ChronometervsHemel Sky Racer Automatic

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Serica Ref. 5303 Diving Chronometer

5303-1-diving-chronometer

MSRP $1,768

Hemel Sky Racer Automatic

sky-racer

MSRP $700

At a glance

14 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Sky Racer Automatic43mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Sky Racer Automatic40h

Water Resistance

Ref. 5303 Diving Chronometer300m

Sky Racer Automatic50m

MSRP

Ref. 5303 Diving Chronometer$1,768

Sky Racer Automatic$700

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal

Sapphire

Domed Sapphire

AR Coating

Yes

Inner

Dial Color

Enamel Black

Panda

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

SL4617

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$700

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